If it takes 5-6 seconds to change, then the game could be having trouble processing the change for some reason. Low trillions isn't even that high for this game though so would be surprising if high numbers are the issue. Also maybe the territories are not really set up for it to take 5-6 seconds to update Spiral Power, but it's not supposed to take that long anyway. Interesting find with the library bug too. Yeah I don't think levels should be more expensive after using the library.
I know there's a lot of display bugs and maybe bugs with girls taking off clothes in a different order than their pictures and such, but those are usually minor, it takes a lot of effort to find and fix all of them, and Changer has bigger things to worry about. But if it's causing game mechanic or processing issues then that is something to worry about. Ideally you would like adequate time to fix game bugs, read feedback and implement popular or good ideas. But if you have a lot on your plate then it can get in the way of doing that or stress you out. If it becomes a problem then maybe limiting how much you take on or commission is an answer. Pushing yourself too much is unhealthy.